linux-kernel - Re: [PATCH -next] userfaultfd: remove set but not used variable 'h'

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Message-ID: <20191010012322.GB2167@richard>
Date:   Thu, 10 Oct 2019 09:23:22 +0800
From:   Wei Yang <richardw.yang@...ux.intel.com>
To:     Mike Kravetz <mike.kravetz@...cle.com>
Cc:     YueHaibing <yuehaibing@...wei.com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        "Joel Fernandes (Google)" <joel@...lfernandes.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Wei Yang <richardw.yang@...ux.intel.com>,
        Hugh Dickins <hughd@...gle.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH -next] userfaultfd: remove set but not used variable 'h'

On Wed, Oct 09, 2019 at 05:45:57PM -0700, Mike Kravetz wrote:
>On 10/9/19 5:27 AM, YueHaibing wrote:
>> Fixes gcc '-Wunused-but-set-variable' warning:
>> 
>> mm/userfaultfd.c: In function '__mcopy_atomic_hugetlb':
>> mm/userfaultfd.c:217:17: warning:
>>  variable 'h' set but not used [-Wunused-but-set-variable]
>> 
>> It is not used since commit 78911d0e18ac ("userfaultfd: use vma_pagesize
>> for all huge page size calculation")
>> 
>
>Thanks!  That should have been removed with the recent cleanups.
>
>> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
>
>Reviewed-by: Mike Kravetz <mike.kravetz@...cle.com>

If I am correct, this is removed in a recent patch.

>-- 
>Mike Kravetz

-- 
Wei Yang
Help you, Help me